Forming die of carbon fiber engine arm

Abstract

The utility model discloses a forming die of a carbon fiber engine arm, which comprises an upper die and a lower die, the bottom of the upper die is concavely provided with an upper forming surface upwards, and the top of the lower die is concavely provided with a lower forming surface downwards; the bottom wall of the lower forming face is downwards provided with a containing groove, an insert is arranged in the containing groove, the top of the insert is provided with a hole forming face used for forming a through hole of the carbon fiber engine arm, the hole forming face protrudes out of the containing groove, the bottom of the lower die is upwards concavely provided with a groove, the top wall of the groove is provided with a via hole communicated with the containing groove, and a screw penetrates through the via hole. The screw comprises a screw head and a screw rod connected with the top of the screw head, a first silica gel gasket is clamped between the insert and the bottom wall of the containing groove, and a second silica gel gasket and a metal gasket are sequentially arranged between the top of the screw head and the top wall of the groove from top to bottom. According to the carbon fiber vehicle arm, the through holes are formed in the carbon fiber vehicle arm, the pits are formed in the through holes after the carbon fiber vehicle arm is formed, follow-up machining of the through holes is facilitated through the pits, ejection marks cannot be left on the carbon fiber vehicle arm, and the structural design is ingenious.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm manufacturing technology, and in particular to a molding die for a carbon fiber robotic arm. Background Technology

[0002] Vacuum bag forming refers to the method of placing a part in a vacuum bag and solidifying it under vacuum pressure by drawing a vacuum. The vacuum bag is made of a high-strength, highly ductile material (such as nylon film), and is bonded to the mold with an adhesive sealing strip. The part attached to the mold is wrapped in the bag, and a gas-guiding felt is placed inside the bag to ensure unobstructed vacuum passage. The bag is equipped with a vacuum nozzle that can be connected to a vacuum pump via a conduit.

[0003] The carbon fiber machine arm is a hollow tube with one end serving as the mounting end. The mounting end has a mounting groove with a shaped bottom wall. This shaped surface has a through-hole. During production, the formed carbon fiber machine arm is attached to the lower mold, and the ejector mechanism of the lower mold ejects the machine arm. However, the ejector mechanism easily leaves ejection marks on the surface of the hollow tube, affecting the product's appearance. Furthermore, the shaped surface makes machining the through-hole difficult. Therefore, improving the mold's ability to produce high-quality carbon fiber machine arms is a key research direction in the industry.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of the above, this utility model addresses the deficiencies of the existing technology and its main objective is to provide a molding die for a carbon fiber machine arm. The die features a receiving groove formed downwards on the bottom wall of the lower molding surface. An insert is placed within the receiving groove, and the top of the insert has a hole-forming surface for forming a through hole in the carbon fiber machine arm. This hole-forming surface protrudes from the receiving groove, leaving a recess at the through hole after molding. After removing the screws, the insert can be lifted through a through hole in the lower die, thus ejecting the carbon fiber machine arm from the lower die. The recess facilitates subsequent through hole processing and prevents ejection marks from remaining on the carbon fiber machine arm. The structure is ingeniously designed. Furthermore, the anti-mistake recess and anti-mistake protrusion ensure accurate installation of the insert in the receiving groove. Additionally, the first and second silicone gaskets are located at both ends of the through hole, improving the sealing of the through hole and preventing air leakage, thereby ensuring the production quality of the carbon fiber machine arm.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A molding die for a carbon fiber robotic arm includes an upper die and a lower die. The bottom of the upper die has an upwardly recessed upper molding surface, and the top of the lower die has a downwardly recessed lower molding surface. The upper and lower molding surfaces together form a molding cavity for molding the carbon fiber robotic arm; wherein:

[0008] The bottom wall of the lower molding surface has a downward-facing receiving groove, in which an insert is provided. The top of the insert has a hole forming surface for forming a through hole for the carbon fiber arm, and the hole forming surface protrudes from the receiving groove. The bottom of the insert has a foolproof recess, and correspondingly, the receiving groove has a foolproof protrusion that matches the foolproof recess. The bottom of the lower mold has an upward-facing groove, and the top wall of the groove has a through hole that connects to the receiving groove. A screw passes through the through hole, and the screw includes a screw head and a threaded rod connected to the top of the screw head. The threaded rod passes through the through hole and is connected to the insert. A first silicone washer is sandwiched between the insert and the bottom wall of the receiving groove. The first silicone washer is fitted around the outer periphery of the threaded rod. A second silicone washer and a metal washer are arranged sequentially from top to bottom between the top of the screw head and the top wall of the groove.

[0009] As a preferred embodiment, the bottom wall of the receiving groove is provided with a first mounting groove facing downwards. The first mounting groove is disposed on the outer periphery of the through hole, and the first silicone gasket is installed in the first mounting groove.

[0010] As a preferred embodiment, the top wall of the groove is provided with a second mounting groove, which is located on the outer periphery of the through hole. The metal washer is located in the groove, and the second silicone washer is fixed in the second mounting groove.

[0011] As a preferred embodiment, the outer diameter of the metal washer is larger than the outer diameter of the second silicone washer.

[0012] As a preferred embodiment, the metal washer is a stainless steel washer.

[0013] As a preferred embodiment, the insert has a threaded hole at the bottom facing upwards, and the screw includes a threaded part and a smooth part arranged sequentially from top to bottom. The threaded part is connected to the threaded hole, and the smooth part passes through the through hole.

[0014] As a preferred embodiment, the top of the upper mold has an air vent that connects to the upper forming surface.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0016] The main feature is that a receiving groove is formed downwards on the bottom wall of the lower forming surface, and an insert is placed in the receiving groove. The top of the insert has a hole forming surface for forming a through hole for the carbon fiber machine arm. The hole forming surface protrudes from the receiving groove, so that the carbon fiber machine arm will leave a pit at the through hole after forming. After the screw is removed, the insert can be lifted through the through hole set in the lower mold, and then the carbon fiber machine arm can be ejected from the lower mold. The pit facilitates the subsequent processing of the through hole and prevents the ejection mark from being left on the carbon fiber machine arm. The structure is ingeniously designed. In addition, the setting of the foolproof recess and the foolproof protrusion can ensure that the insert is accurately installed in the receiving groove. Furthermore, the first silicone gasket and the second silicone gasket are located at both ends of the through hole, which improves the sealing performance of the through hole and makes it difficult for air to leak from the through hole, thereby ensuring the production quality of the carbon fiber machine arm.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the screw fitting according to a preferred embodiment of the present utility model;

[0020] Figure 3 This is an exploded view of the lower mold of a preferred embodiment of the present invention;

[0021] Figure 4 This is a three-dimensional schematic diagram of a carbon fiber robotic arm according to a preferred embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 10. Upper mold 101. Upper forming surface

[0024] 102, air bag opening 20, lower mold

[0025] 201. Lower forming surface; 202. Receiving groove

[0026] 203. Anti-foolproof protrusion; 204. Groove

[0027] 205, Through hole; 206, First mounting slot

[0028] 207, Second mounting slot; 30, Insert

[0029] 31. Hole forming surface 32. Fool-proof concave part

[0030] 33, threaded hole 40, carbon fiber arm

[0031] 41. Through hole 50. Screw

[0032] 51. Screw head 52. Screw rod

[0033] 521. Threaded section; 522. Smooth section

[0034] 60. First silicone gasket; 70. Second silicone gasket

[0035] 80. Metal washers. Detailed Implementation

[0036] First, it should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including an upper mold 10 and a lower mold 20.

[0038] The bottom of the upper mold 10 is recessed with an upper forming surface 101. Specifically, the top of the upper mold 10 is provided with an air bag opening 102 that communicates with the upper forming surface 101.

[0039] The lower mold 20 has a downwardly recessed lower forming surface 201 at its top, and the upper forming surface 101 and the lower forming surface 201 together form a forming cavity for forming carbon fiber arm.

[0040] See Figure 1 and Figure 3 As shown, the bottom wall of the lower forming surface 201 is provided with a receiving groove 202, and an insert 30 is provided in the receiving groove 202. The top of the insert 30 is provided with a hole forming surface 31 for forming a through hole 41 for forming a carbon fiber arm 40, and the hole forming surface 31 protrudes out of the receiving groove 202. Preferably, the bottom of the insert 30 is provided with a foolproof recess 32, and correspondingly, the receiving groove 202 is provided with a foolproof protrusion 203 that matches the foolproof recess 32.

[0041] See Figure 1 and Figure 2As shown, the bottom of the lower mold 20 is recessed upwards with a groove 204. The top wall of the groove 204 has a through hole 205 that connects to the receiving groove 202. A screw 50 passes through the through hole 205. The screw 50 includes a screw head 51 and a screw rod 52 connected to the top of the screw head 51. The screw rod 52 passes through the through hole 205 and is connected to the insert 30. A first silicone gasket 60 is sandwiched between the insert 30 and the bottom wall of the receiving groove 202. The first silicone gasket 60 is sleeved on the outer periphery of the screw rod 52. A second silicone gasket 70 and a metal gasket 80 are arranged sequentially from top to bottom between the top of the screw head 51 and the top wall of the groove 204. The cross-sections of the first silicone gasket 60 and the second silicone gasket 70 are both square. Compared with the traditional method of only sandwiching an O-ring between the insert 30 and the bottom wall of the receiving groove 202, the square gasket has a larger contact area and a better sealing effect. Furthermore, the sealing at both ends further improves the sealing performance.

[0042] Specifically, the bottom wall of the receiving groove 202 is provided with a first mounting groove 206, which is located on the outer periphery of the through hole 205. The first silicone gasket 60 is installed in the first mounting groove 206. The top wall of the groove 204 is provided with a second mounting groove 207, which is located on the outer periphery of the through hole 205. The metal gasket 80 is located in the groove 204 and fixes the second silicone gasket 70 in the second mounting groove 207. The bottom of the insert 30 is provided with a threaded hole 33. The screw 52 includes a threaded part 521 and a smooth part 522 arranged sequentially from top to bottom. The threaded part 521 is connected to the threaded hole 33, and the smooth part 522 passes through the through hole 205.

[0043] In this embodiment, the outer diameter of the metal washer 80 is larger than the outer diameter of the second silicone washer 70. The metal washer 80 is a stainless steel washer. The metal washer 80 can fix the second silicone washer 70 in the second mounting groove 207 and increase the friction of the screw 50 to prevent the screw 50 from loosening.

[0044] The key design feature of this utility model is:

[0045] The main feature is that a receiving groove is formed downwards on the bottom wall of the lower forming surface, and an insert is placed in the receiving groove. The top of the insert has a hole forming surface for forming a through hole for the carbon fiber machine arm. The hole forming surface protrudes from the receiving groove, so that the carbon fiber machine arm will leave a pit at the through hole after forming. After the screw is removed, the insert can be lifted through the through hole set in the lower mold, and then the carbon fiber machine arm can be ejected from the lower mold. The pit facilitates the subsequent processing of the through hole and prevents the ejection mark from being left on the carbon fiber machine arm. The structure is ingeniously designed. In addition, the setting of the foolproof recess and the foolproof protrusion can ensure that the insert is accurately installed in the receiving groove. Furthermore, the first silicone gasket and the second silicone gasket are located at both ends of the through hole, which improves the sealing performance of the through hole and makes it difficult for air to leak from the through hole, thereby ensuring the production quality of the carbon fiber machine arm.

[0046] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A molding die for a carbon fiber robotic arm, characterized in that: The mold includes an upper mold and a lower mold. The bottom of the upper mold is recessed upwards to form an upper forming surface, and the top of the lower mold is recessed downwards to form a lower forming surface. The upper and lower forming surfaces together form a forming cavity for forming a carbon fiber robotic arm. The bottom wall of the lower forming surface has a downward-facing receiving groove, in which an insert is provided. The top of the insert has a hole forming surface for forming a through hole for the carbon fiber arm, and the hole forming surface protrudes from the receiving groove. The bottom of the insert has a foolproof recess, and correspondingly, the receiving groove has a foolproof protrusion that matches the foolproof recess. The bottom of the lower mold has an upward-facing groove, and the top wall of the groove has a through hole that connects to the receiving groove. A screw passes through the through hole, and the screw includes a screw head and a threaded rod connected to the top of the screw head. The threaded rod passes through the through hole and is connected to the insert. A first silicone washer is sandwiched between the insert and the bottom wall of the receiving groove. The first silicone washer is sleeved on the outer periphery of the threaded rod. A second silicone washer and a metal washer are arranged sequentially from top to bottom between the top of the screw head and the top wall of the groove.

2. The molding die for a carbon fiber robotic arm according to claim 1, characterized in that: The bottom wall of the receiving groove is provided with a first mounting groove, which is located on the outer periphery of the through hole, and the first silicone gasket is installed in the first mounting groove.

3. The molding die for a carbon fiber robotic arm according to claim 1, characterized in that: The top wall of the groove is provided with a second mounting groove, which is located on the outer periphery of the through hole. The metal washer is located in the groove and the second silicone washer is fixed in the second mounting groove.

4. The molding die for a carbon fiber robotic arm according to claim 3, characterized in that: The outer diameter of the metal washer is larger than that of the second silicone washer.

5. The molding die for a carbon fiber robotic arm according to claim 1, characterized in that: The metal washer is a stainless steel washer.

6. The molding die for a carbon fiber robotic arm according to claim 1, characterized in that: The insert has a threaded hole at the bottom facing upwards. The screw includes a threaded part and a smooth part arranged sequentially from top to bottom. The threaded part is connected to the threaded hole, and the smooth part passes through the through hole.

7. The molding die for a carbon fiber robotic arm according to claim 1, characterized in that: The top of the upper mold has an air sac opening that connects to the upper forming surface.

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